The BV UI 304 0023 Transformer manufactured by Hahn is an encapsulated, 10VA, 110/110VAC, 18V/18V, 277mA/277mA transformer. It is designed for use in equipment safety-rated for UL Class 2 applications, with maximum output ratings of 110/110VAC, 18V/18V and 277mA/277mA. It features high mechanical shock and vibration resistance, high dielectric strength, and high efficiency. It is optimal for applications such as doorbells, light dimmers and dimmable LED fixtures. It is UL, CE, TÜV, and other international safety-listed.